Too eager to play with your patch, I made several errors in my
grammar. I had a $from.name_get() but I forgot to declare [from].
Bison answered:
ugrammar-pruned.y:534.37-50: reference is invalid: `$from.name_get',
symbol not found
IMHO it should refer to $from, not to $from.name_get.
Also, I had a $9foo, where 9 should have been removed. It accepted $9
and left the "foo" attached to the expansion of $9. Now that we have $
[] to make what we mean clear, I think that it should complain about
$9foo, like it does for the grammar symbol 9foo. We should support
$[9]foo for those who really mean that.
This applies to other values of 9 and foo :)
